pub fn dp_rec_mc(amount: u32) -> u32 {
    let list = [100, 50, 30, 20, 10, 5, 2, 1];
    let mut amount = amount;
    let mut count = 0;

    for &coin in list.iter() {
        while amount >= coin {
            amount -= coin;
            count += 1;
        }
    }

    count
}
